ENCYCLOPHDIA OF GARDENING. 
Orange Poppy (Papaver lateritium).—See Papaver. 
Orange Stone-crop (Sedum kamtschaticum).—See Sedum. 
Orchis.—Ord. Orchidacew. Hardy terrestrial orchids. Deciduous. 
OUTDOOR CULTURE: Soil, rich loam. Position, sunny, deep, 
well-drained borders or rockeries. Plant, Aug. to Nov., placing tubers 
2in. below surface. Water freely during growing period. Mulch with 
decayed manure annually in March or April. Lift and replant when 
unhealthy only. Apply weak stimulants occasionally during summer. 
POT CULTURE: Compost, equal parts good loam, sandy peat, leaf- 
mould, charcoal, broken chalk & silver sand. Position, well-drained 
pots in cold, shady frame. Pot, Aug. to Nov., placing tubers 1 in. 
below surface, & three to five in a 6in. pot. Make compost firm. 
Plunge pots to rims in cinder ashes or cocoanut-fibre refuse. Water 
copiously from time growth begins till foliage fades; then keep nearly 
dry. Apply weak stimulants from April till flowers fade. Remove 
flower spikes when blooms fade. Repot very two or three years. Pro- 
tect from Dec. to Feb. by covering of cocoanut-fibre refuse or cinder 
ashes. Erepa ate by division of tubers, Aug. to Nov. 
SPEOIES TIVATED: O. foliosa (Madeira Orchis), purple, May, 2 ft., 
Madeira; latifolia (Marsh Orchis), purple, June, 1 ft., Europe (Britain); laxiflora 
(Guernsey Orchis), purple, May and June, 1 ft., Europe (Channel Islands); macu- 
lata (Spotted Orchis), purple and white, June, 1 ft., Europe (Britain); pyramidalis 
(Pyramidal Orchis), rosy purple, summer, 1 ft., Britain; purpurea (Lady Orchis), 
purple and rose, May, 1 ft., Europe (Britain); spectabilis (North American Orchis), 
purple and white, May, 6 in., N. America. 
Oregon Cypress (Cupressus lawsoniana).—See Cupressus. 
Oregon White Cedar (Cupressus lawsoniana).—See Cupres- 
sus. 
Oriental Goat’s-Rue (Galega orientalis)—See Galega. 
Oriental Hellebore (Helleborus orientalis).—See.Helleborus. 
Oriental Plane-tree (Platanus orientalis)—See Platanus. * 
Oriental Poppy (Papaver orientale‘ —See Papaver. : 
Oriental Strawberry-tree (Arbutus Andrachne). — See 
Arbutus. 
Origanum (Sweet Marjoram; Pot Marjoram; Dittany of Crete). 
—Ord. Labiatez. Hardy herbaceous shrubby plants & aromatic herbs. 
First introduced 1573. 
CULTURE OF COMMON POT AND WINTER MARJORAM: Soil, 
ordinary rich. Position, sunny borders. Plant, Feb. or March, 10in. 
apart in rows 15in. asunder. Top-dress annually in March with de- 
cayed manure. Lift, divide & replant every three or four years. 
CULTURE OF SWEET MARJORAM: Soil, ordinary rich. Position, 
sunny borders. Sow seeds 1-16 in. deep in light soil in shallow boxes 
in temp. 55° to 65° in March, transplanting seedlings when 2 in, high, 
Gin. apart in rows 9in. asunder in April outdoors, thinning seedlings 
“to one in.each group when 1 to 2in. high. Gather shoots when coming 
into flower, dry in shade, and store away for winter use. 
CULTURE OF DITTANY OF CRETE.—Compost, two parts sandy 
loam, one part leaf-mould & sand. Position, well-drained pots in sunny 
window or greenhouse. Pot, Feb. or March. Water freely March to 
Sept., moderately afterwards. Suitable for suspending in pots or 
baskets. Apply stimulant occasionally during summer. Propagate 
common pot or winter marjoram by seeds sown 3 in. deep in ordinary 
soil in sunny position outdoors in March or April; ‘division of roots, 
March or April; shrubby species by cuttings of young shoots inserted 
in sandy soil under bell-glass in greenhouse or window in summer, 
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